


For over 30 years, LEROY Automation has been designing, manufacturing, and integrating automation solutions and control-command systems engineered for the most demanding environments. As a trusted partner to major industrial prime contractors, we develop embedded computers, I/O modules, and communication gateways that guarantee maximum reliability and availability.
Our products are built to withstand harsh operational conditions – including temperature fluctuations, shocks, vibrations, and continuous service requirements – to perfectly match the needs of critical infrastructures.
We support our global customers across three main pillars of expertise:
Rail & Mass Transit: Proven track record in delivering Vehicle Control Units (VCU), Train Control and Management Systems (TCMS), and certified onboard I/O equipment for rolling stock (locomotives, metros, trams, and regional trains).
Energy & Smart Grids: Automation solutions for electrical substations, remote management, and control units designed for energy distribution networks and renewable energy systems.
Defense & High-Reliability Industries: Ruggedized automation systems and embedded computers complying with strict military and industrial standards to manage mission-critical operations.
Embedded solutions, infrastructure control, signaling systems.
Electric network management, optimization of distribution systems.
LEROY Automation designs robust programmable controllers, tailored for extreme environments and secured against cyberattacks.
LEROY Automation has been designing reliable industrial solutions for automation, transportation, and the security of critical sites for 35 years.

LEROY Automation offers EN50155 railway products to build train control systems (TCMS): • vehicle control units (VCU)…

Designed to meet the requirements of the EN61850 standard, the ACS range enables the automation of electrical substations and the management of power supply sections of substations…

LEROY Automation has been providing automation systems to stakeholders in the military sector and more generally for applications in environments with extreme climatic conditions…

For industrial sites, LEROY Automation offers the modular controllers from the LT range, remote input/output modules from the TES range, and micro-controllers…
To address modern digital challenges, cybersecurity is embedded at every stage of our engineering process. Our hardware and software architecture natively complies with the IEC 62443-4-1 standard and aligns with the European Cyber Resilience Act (CRA Ready) frameworks.
Partnering with LEROY Automation means choosing long-lasting products, strict quality management, and dedicated technical support throughout the entire lifecycle of your projects.

LEROY Automation reaches a new milestone in railway cybersecurity At LEROY Automation, cybersecurity is engineered from the ground up to address the specific constraints of the rail sector. Today, we
…
Executive Summary Prior to December 11, 2027, the CRA compliance of products already on the market relies exclusively on Article 14. The technical requirements of Annex I are not applicable,
…
Automation: the critical link in the defense chain Automation: the critical link in the defense chain In land-based, naval, or embedded defense systems, automation is a critical functional element of
…




